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Install Nvidia Driver on Ubuntu 18.04.3

Secure Boot

This section applies to machines with Secure Boot, such as ThinkPad.

1. Before installation, switch to "Discrete Graphics" in BIOS, if both Intel and Nvidia graphics are present.
2. During installation, make sure to select the "Install third-party software for graphics and Wi-Fi hardware and addition media formats" in "Updates and other software" screen.
3. Select "Configure Secure Boot", and set password.
4. Continue Ubuntu installation as normal.

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import urllib2
import threading
from Queue import Queue
import sys, os, re

class ThreadedDownload(object):
	
	REGEX = {
		'hostname_strip':re.compile('.*\..*?/', re.I)
	}

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How to install Qt on Linux from source code

One of the best option is to use the run package offered by Qt to install the libraries and its IDE (Qt Creator). Nevertheless However, when you want to compile it for a sever, where no GUI is required, you must be then interested in how to compile from source and discover some of the configuration options you have to disable some GUI modules among others and get lightest weight libraries.

First of all download the tar.xz file from Qt. You can also go to the archive and select the best that fulfill your requirement. Right now I am going on with the newest version up to the moment v5.9.3.

Create a directory and uncompress the downloaded file:

  $ mkdir temp

$ cd temp

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How to install NVIDIA Drivers

Disable nouveau (if required) - free and open source graphi device driver for Nvidia video cards.

First disable nouveau free/libre software drivers for NVIDIA using blacklist:

$ sudo vim /etc/modprobe.d/blacklist.conf

And include:

blacklist nouveau

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How to install OpenCV 4.2.0 with CUDA 10.0 in Ubuntu distro 18.04

First of all install update and upgrade your system:

    $ sudo apt update
    $ sudo apt upgrade

Then, install required libraries:

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// LongPress: event filter Object for detecting Mouse pressed down for 1 second or more
// when triggered, it executes callback function supplied in the constructor

// usage:
/* 
	someButton->installEventFilter(new LongPress(this, [this] {
		// do some stuff
	}));
*/

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Installing Google Test on Mac

One bash script to install google test (and mock) on your Mac. I assume you already had install cmake (if not, use brew - brew install cmake).

It use brew directories to store gmock and gtest.

gtest_installer.sh

#!/usr/bin/env bash

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Try to avoid building Wireshark on Windows as much as you can. Read the following only if you have no other choice. I use Jenkins to build Wireshark on Windows. Jenkins just run the .bat file.

Advices:

• Don't use Visual Studio 2012 but 2013 or newer.
• Use Chocolatey as much as possible.
• Don't mess around with regedit

PATH

Here is my PATH before running the script:

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cipher = "10101111" -- must be eight digit binary number

--Returns the XOR of two binary numbers
function xor(a,b)
  local r = 0
  local f = math.floor
  for i = 0, 31 do
    local x = a / 2 + b / 2
    if x ~= f(x) then
      r = r + 2^i

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1:设置

sudo vi /etc/sysctl.conf
net.ipv4.ip_forward=1
sudo sysctl -p

2:安装

https://www.wireguard.com/install/